Validators
XML Validator
Validate XML syntax and structure instantly to ensure your documents are well-formed. Identify missing tags and attribute errors with line-by-line diagnostic feedback to resolve issues quickly.
Validate XML syntax and structure instantly to ensure your documents are well-formed. Identify missing tags and attribute errors with line-by-line diagnostic feedback to resolve issues quickly.
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Did You Know?
XML is case-sensitive; <Tag> and <tag> are treated as completely different elements.
Best Practice
Always include an XML declaration at the top of your file to specify the version and encoding used.
Tip
Use CDATA sections to include blocks of text that contain characters that would otherwise need escaping.
Q: What does "well-formed" mean? A: A well-formed XML document adheres to the syntax rules defined by the W3C, such as proper nesting and having a single root element.
Q: Why is my XML invalid even though it looks correct? A: Check for invisible characters, unescaped ampersands, or case-sensitivity issues, as XML is strictly case-sensitive.
Q: Does this tool validate against a Schema (XSD)? A: This validator currently focuses on well-formedness and general XML syntax checking.
Did You Know?
Every XML document must have exactly one root element that acts as a parent for all other content.